Does the refuge have controlled opening hours, or is it open all the time? I know the visitors centre is open seasonally.

It does close at dusk as far as I know.

There are some parts that are open all the time, but the best parts have hours with a gate that closes around sunset.

They put the gates down inside at 730pm I believe. Some parts are still accessible but technically it closes at dark.

As far as I know it's open all the time... There's nothing to block it off it's just on a open road

Part is and part isn't